body {
    font: 16px/28px "Microsoft yahei";
}

h1 {
    font-weight: 400;
    text-align: center;

}

.gray {
    color: #888888;
    text-align: center;
    font-size: 12px;
}

div {
    text-align: center;
}

a {
    text-decoration: none;
}

p {
    text-indent: 2em;
}

.footer {
    color: #888888;
    font-size: 13px;
}